ASA 127th Meeting M.I.T. 1994 June 6-10

2pBV6. How accurate are volume flow measurements using Doppler ultrasound
from commercial systems?

Andrew J. Winkler

Junru Wu

Dept. of Phys., Univ. of Vermont, Burlington, VT 05405

The accuracy of volume flow measurements using Doppler ultrasound was
tested on a calibrated volume flow phantom for several commercial systems (ATL
Ultramark4 and Ultramark9, Hewlett-Packard Sonos 1000, Quantum Quad1 and Acuson
128). The phantom consists of a plastic tubing (inner diameter: 0.64 cm)
running through a rectangular plastic container filled with gelatin-based
tissue-mimicking material. Solutions of glycerol, water, and cellulose powder
mixture, whose viscosity was 5 cp at 25 (degrees)C, were circulated through the
tubing with a variable speed roller pump. The preliminary results showed that
the volume flow measured by the above-mentioned commercial systems were
overestimated by 25%--50%.